Bogdan Vysotskyi's research while affiliated with Université Grenoble Alpes and other places

Publications (14)

Article
Due to their unique size-dependent properties, nanoparticles (NPs) have many industrial and biomedical applications. Although NPs are generally characterized based on the size or morphological analysis, the mass of whole particles can be of interest as it represents the total amount of material in the particle regardless of shape, density, or eleme...
Article
Due to their physical properties, nanomechanical sensors (NEMS) can achieve mass measurements in the mega- to gigadalton range, which is hardly obtained with conventional mass-spectrometers. However, NEMS signals are subject to noise, causing a loss of mass resolution and thus emphasizing the need of noise control. We propose a denoising model that...
Article
When studying viruses, the most prevalent aspects that come to mind are their structural and functional features, but this leaves in the shadows a quite universal characteristic: their mass. Even if approximations can be derived from size and density measurements, the multi MDa to GDa mass range, featuring a majority of viruses, has so far remained...
Thesis
Present work addresses question of MEMS capacitive vibrational energy harvesting for biomedical applications, and notably for powering an autonomous leadless pacemaker system. Such an application imposes several critical requirements upon the energy harvesting system, notably the sufficient miniaturization (<1cm³), power output in range of 1-10 µW,...
Article
Full-text available
This paper presents an experimental proof-of-concept of an innovative design of electrostatic vibration energy harvester based on a double bistable curved beam whose mechanical behaviour is significantly modified by additional linear springs. The basic analytical model for a curved beam with dynamical and quasi static behaviour is introduced and va...
Article
The purpose of this paper is to introduce a novel technique to engineer in a precise way the structural nonlinearity in MEMS springs. To perform the adjustment of structural nonlinearity, the idea of using a sine-shaped beam following the combination of the natural bending modes of a straight one is explored to create a multimodal-shaped spring. Th...
Article
Full-text available
In this work an approach to minimize a non-linear system with a flat region in the force-displacement characteristics is studied. Design, simulation, fabrication and characterization of the initial system with the linear compensational spring and that of a miniaturized one without it are presented. The presented highly nonlinear curved beam system...
Article
Full-text available
The purpose of the presented work is to introduce the novel design of electrostatic energy harvester using bistable mechanism with compensational springs in gravity field capable of providing the output of several μW under the excitation of extremely small amplitude (up to 0.2g) and low frequency (10-100Hz). Presented energy harvester uses the bist...
Article
Full-text available
This work is dedicated for the study of energy harvesters implemented in form of microelectromechanical systems (MEMS) used to harvest ambient vibrations for powering standalone electronic devices. The previewed application is to power a leadless pacemaker with mechanical energy of the heartbeat, which requires the amount of power typically more th...

Citations

... For the studied device, Table 1 summarizes what parameters are known or measured directly (i.e., mass m, load resistance R L , etc) and what parameters have been extracted from the experimental data (i.e., stopper Q-factor, etc). We note that some of them (m, R L , C 0 ) can be measured with very high precision, while other parameters (d stop , d lim ) have reliable reference values but can vary within 5-10% due to the fabrication effects 15,20 . The linear resonator parameters k and Q have been extracted using the lowest excitation acceleration amplitude of 0.5g. ...
... The most recent generation of microscale kinetic energy harvesters (KEHs) that convert mechanical vibrations to electricity is nonlinear [1], [2], and the modelling of such devices is a challenging task. Different physical mechanisms are used in these devices to facilitate energy conversion, and, hence, one generally distinguishes electrostatic kinetic energy harvesters (eKEHs) [3], [4], electromagnetic kinetic energy harvesters (emKEHs) [5], [6] and piezoelectric kinetic energy harvesters (pKEHs) [7], [8]. In this paper, we consider a kinetic energy harvester that is actuated through a magnetic force generated by an AC current acting on a magnetic mass. ...
... Bistable actuators have been fabricated, either at meso-scale [24,25] or micro-scale, generally by silicon technologies [26][27][28][29][30][31][32][33]. The present work describes the design, fabrication and test of bistable micro-actuators composed of pre-shaped buckled beams in silicon. ...
... These harvesters appear promising but still require the external involvement of magnets. Other authors proposed stress-induced monostable nonlinear PEHs using a doubly clamped beam to demonstrate that both bandwidth and performance of the nonlinear energy harvester are improved [29,33,34]. Wang et al. [35] investigated a tri-state nonlinear PEH by introducing a nonlinear magnetic force using four magnets. ...
... Here, we demonstrate the force sensor for the characterization of buckling beams which are often applied in MEMS (e.g. known from [8,9]). Typically, buckling beams switch from one stable state into a second stable state as a critical force or displacement is exceeded. ...
... It has been reported that a significant growth of the converted power is observed at lower frequencies in harvesters with some particular configurations of stoppers or the proof mass with a cavity.The effect is known in the literature as frequency up-conversion. Since the first observation of this effect, there have been attempt to explain and quantify it, as well as to improve the design of the devices to enhance frequency up-conversion 1,5,6,[8][9][10][11][12][13]17,19,[21][22][23] . ...